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Investigating delamination migration in composite tape laminates
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | DeCarvalho, Nelson V. Ratcliffe, James G. |
| Copyright Year | 2014 |
| Description | A modification to a recently developed test specimen designed to investigate migration of a delamination between neighboring ply interfaces in tape laminates is presented. The specimen is a cross-ply laminated beam consisting of 40 plies with a polytetrafluoroethylene insert spanning part way along its length. The insert is located between a lower 0-degree ply (specimen length direction) and a stack of four 90-degree plies (specimen width direction). The modification involved a stacking sequence that promotes stable delamination growth prior to migration, and included a relocation of the insert from the specimen midplane to the interface between plies 14 and 15. Specimens were clamped at both ends onto a rigid baseplate and loaded on their upper surface via a piano hinge assembly, resulting in a predominantly flexural loading condition. Tests were conducted with the load-application point positioned at various locations along a specimen's span. This position affected the sequence of damage events during a test. |
| File Size | 2750320 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140011508 |
| Archival Resource Key | ark:/13960/t2x39sg99 |
| Language | English |
| Publisher Date | 2014-07-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Specimen Geometry Position Location Polytetrafluoroethylene Delaminating Beams Supports Ply Orientation Rigidity Laminates Composite Structures Damage Relocation Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
